JPS5955529A - Constitution control system - Google Patents

Abstract

PURPOSE:To attain an automatic switch between using and spare functions, by providing a network controller, etc., which has an initial microprogram loading function, an error logging function and various maintenance functions. CONSTITUTION:A network controller has an initial microprogram loading function, an error logging function and various maintenance functions. For instance, a link address comparator 15 compares the set value of a link address setting circuit 14 and a link address on an NMP link. If coincidence is obtained from this comparison, a logic ''1'' is delivered. At the same time, a device code comparator 17 compares a device code on the NMP link with the set value of a device code setting circuit 16. Then a logic ''1'' is delivered when coincidence is obtained. Then a logic ''1'' is delivered from an AND circuit 26 when a parity is approved by a parity checking circuit 20, and a signal SEL is set at logic ''1'' after setting a flip-flop 18.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a comprehensive active/standby automatic switching system for network-related devices such as communication control processing devices, line connection devices, and line switching devices.

[Conventional technology and problems]

FIG. 1 illustrates an example of a conventional working/standby switching system for network-related equipment. In Figure 1, 1
-1 and 1-2 are central processing units, 2-1 and 2-2 are communication control processing units, 3-1 and 3-2 are line connection devices, 4-wire line switch (line switching device), 4-wire system Each of the monitoring devices is shown. Communication control processing device 2-1. 2
-2u'.

A line connection device 3-1.3-.0 that has a central control unit, channels, adapters, line scanning mechanism, and has basic communication control functions. Second, it has a line connection mechanism and line set. Although not shown, these communication control processing devices and line connection devices each have a route changeover switch for switching between active and backup. In the system of FIG. 1, when an error occurs, a system message is displayed on the display without indicating the occurrence of the error or the location where the error has occurred. The operator sees this system message and operates a switch on the panel of the system monitoring device to switch between active and standby.

The working/standby switching system shown in FIG. 1 can be called a remote type manual working/standby switching system. In addition to manual working/standby switching methods, there is also a local type. This local type manual working/standby switching method is a method in which switching between working and standby is performed by operating the route changeover command switch on the operator panel or maintenance panel.

FIG. 2 is a diagram showing the other side of the working/standby switching system of a conventional network-related device. In FIG. 2, 3 indicates a line connection device. Note that the same reference numerals as in FIG. 1 indicate the same parts. The active/standby switching method shown in Figure 2 changes the route between the communication control processing unit and the line connection device through cooperation between the configuration control program and communication access method of the central processing unit, and the network control program of the communication control processing unit. It is a method. In the above-mentioned remote type manual working/standby switching system and local type manual working/standby switching system, the operator determines which device to switch and operates the command switch. The disadvantage is that the burden increases.

The working/backup switching method shown in Figure 2 is an automatic working/backup switching method using software, but it only applies to the route between the communication control processing unit and the line connection equipment, and the line switching equipment is not affected. It's outside. In other words, the current
The standby switching method cannot perform comprehensive automatic working/standby switching of network-related equipment.

[Purpose of the invention]

The present invention is based on the consideration in F above, and is based on the present invention, in a system that has a plurality of communication control processing devices, a plurality of line connection devices, and a line switching device, and has a current and backup configuration. The purpose of this invention is to provide a configuration control method that allows automatic switching from a network management device.

[Structure of the invention]

Therefore, the configuration control method of the present invention is applicable to an online system consisting of a plurality of central processing units, a plurality of communication control processing units, a plurality of line connection devices, and a line switching device, which have a current/backup configuration. , a network management device having an initial microprogram loading function, an error logging function, various operating functions, and various maintenance functions for the communication control processing device, the plurality of communication control processing devices, the plurality of line connection devices, and the line. An interface control circuit installed in each of the switching devices, and a link connecting each of the above interface control circuits and one network management device, and the one network management device has an address specifying the device. The interface control circuit is configured to be able to send a designation word and control system data onto the link, and each of the interface control circuits has an address designation word that detects whether or not the addressing word on the link designates the device to which it belongs. a detecting means, a route switching means that performs route switching on the condition that the own device is specified when the control system data on the link instructs route switching, and a route switching means that performs route switching on the condition that the own device is specified; and display data sending means for sending display data consisting of route establishment state information and operation state information onto the link, provided that the route establishment state information and the operation state information are the same.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to the drawings. Figure 3 is 1
Figure 4 is a diagram showing the position of the network management device within the communication control processing device of the same device. Figure 4 is a diagram showing the active and backup configurations that perform switching control by the network management device. Figure 5 is a diagram showing the address designation word and configuration control word. A diagram explaining the bit definition, Figure 6 is a time chart for NMP link, Figure 7 is NM
1 is a block diagram of one embodiment of a P-interface standard circuit; FIG.

In FIG. 3, 5 is a channel adapter, 6 is a central control unit, 7 is a line scanning mechanism, 8 is a memory, 9 is a network management device, 10 is a floppy disk device, 11
12 indicates a display, and 12 indicates a keyboard. Channel adapter 5, central controller 6, line scanning mechanism 7, and memory 8 constitute one communication control processing device. A central processing unit is connected to the channel adapter 5, and a line connecting device is connected to the line scanning mechanism 7. The network management device 9 is of the broker type, and is connected to the network management device interface control circuit of one communication control processing device, and is capable of loading an initial microprogram, displaying various registers,
It has operation and maintenance functions such as error logging, general-purpose register and memory read/write functions, and input of various data and function keys.

Note that one network management device can be shared by a plurality of communication control processing devices.

In the present invention, a plurality of communication control processing devices forming active and backup configurations are further configured by one network management device,
It manages and controls multiple line connection devices and line switching devices, and in the event of a failure, it is possible to automatically create a backup configuration using the configuration control program within the network management device. FIG. 4 is a diagram showing a working/standby configuration in which switching control is performed by a network management device. Note that in FIG. 4, only one network management device is shown. In FIG. 4, a 13-digit NMP interface standard circuit is shown. Note that the same reference numerals as in FIGS. 1 and 3 indicate the same components. As shown in FIG. 4, each device 2-1. 2-2. 3-1.3-2 and 4 are
Each device 2-1.2-2.3-1.3-2. is connected to one network management device 9 by a link (hereinafter referred to as an NMP link), and each device 2-1.2-2.3-1.3-2.
4 is provided with an NMP interface standard circuit 13 for the link. Oh, each device 2-1.2-2.3-
Configuration control words common to 1.3-2.4 and each device 2-1.
2-2. 3-1. Define an addressing word to select 3-2 or 4. FIG. 5 shows the bit definitions of the addressing word and configuration control word. The addressing word consists of 8 bits + 1 parity, where the first bit is the parity bit, bits 0 to 3 are the link address, and bits 4 to 7 are the device code. The link address roooOJ is the communication control processing unit 2-1, “000
1 J is the communication control processing device 2-2, ro O10J is the line connection device 3-1, and roollJ is the line connection device 3-2.
2. rolooJ indicates the line switching device 4, respectively.

The device code r0000J is the communication control processing device, r
oooIJ indicates a line connection device, and "oolo" indicates a line switching device. The configuration control word is 8 pits + 1
The first bit is the parity bit, the bits 0 to 4 are control system data, and bits 4 to 7.
is display data.

The control system data is created by the network management device 9. Furthermore, the display data is created by the device specified by the address specification word. The definition of the configuration control word used in the communication control processing device is that bit o is valid/invalid for switching, hit 1 is route A/B selection, bits 2 and 3 are undefined, and logic "1"
” bit 4 is enabled on the ingress side of the CA (channel adapter) route, bit 5 with logic “1” is enabled on the B side of the CA route, and bit 6 with logic “1” is logic “1” during the iPL phase.
Bit 7 of `` respectively indicates a hard stop.

Route)A is a route connected to the upper input of each device, and Route)B is a route connected to the lower input of each device. To start up the communication control processing device, first load the microprogram from the floppy disk device 10 of the network management device 9 to the communication control processing device, and then load the program from the central processing device to the communication control processing device. It is done by
iPL phase refers to the period during which the above-mentioned iMPL and iPL are performed. When a machine check error occurs in the central control unit of the communication control processing unit, the central control unit requests an IPL from the higher-level central processing unit. If an error treated as a machine check occurs during this i P IJ, the communication control processing device enters a hard stop state. A hard stop state can be thought of as a down state.

Spin thread, l! The definition of the configuration control word for the connection device and the definition of the configuration control word that can be used for line switching is shown in [1]
It is 1.

FIG. 6 is a time chart for the NMP link. N
The MP link consists of four control lines: a data bus O on the output side and a data bus 1 on the input side. The network management device 9 first places the addressing word on the data bus O, applies a strobe pulse to the control 1 under the condition that the addressing word is established on the data bus O, and then applies a strobe pulse to the data bus O. Data/configuration control word on bus 1
A control pulse is placed on control 2 under the condition that a configuration control word is established on data bus 0. As specified by the addressing word fff:
id, and synchronizes with the control 3 strobe pulse to send route establishment status information and operation status information (presence or absence of an error) to the data bus 1 as a configuration control word, and continues sending until the control 4 strobe pulse.

FIG. 7 is a block diagram showing one embodiment of the NMP interface standard circuit. In Figure 7, 14 is a link.
address setting circuit; 15 is a link address comparison circuit;
16 is a device code setting circuit, 18 and 19 are clip frogs, 20 is a parity check circuit, 21 and 22 are registers, 23 is a parity creation circuit, 24 is a route control path, and 25 is an error detection & PL control circuit. , 26 to 38 are AND circuits, 39 and 40 are NOR circuits, 41 and 42 are NAND circuits, and 48 are OR circuits, ])
V indicates a driver, and RV indicates a receiver, respectively. Data bus 0 is composed of nine signal lines -XDBUSOO to o7 and -1)BUSOP. ≠DBUS□P is parity. Data bus 1 is ≠I) BUSIO to 17 and %DBUS I
It consists of nine signal lines of P. The link address comparison circuit 15 compares the link address on the NMP link with the setting value of the link address setting circuit 14, and outputs a logic "1" if the two match. The device code comparison circuit 17 compares the device code on the NMPIJ link with the set value of the device code setting circuit 16, and outputs a logic "1" if the two match. The parity check circuit 20 checks the logic %PC of logic "1" when parity C)K
Output HK. The AND circuit 26 outputs a logic "1" when all three inputs are logic "1-1". The flip-flop 18 takes in the logic "1" output of the AND circuit 26 with the strobe pulse of CNTL1 and enters the cent state, and returns to the reset state with the strobe pulse of CNTL4. When flip-flop 18 is set,
The signal SEL becomes logic "1".

Flip-flop 19, CNTL3 strobe
It takes in the logic "1" signal SEL with a pulse and enters the set state, and returns to the reset state with the strobe pulse of CNTL4. The output of clip flop 19 is signal 5E
It becomes L1. The control system data of the configuration control word is the signal SEL.
When a strobe pulse on CNTL2 is generated under a logic "1" state, it is captured in register 21. When register 210 pits O and 1 are “11”, root A
When bits O and 1 are 110, selection of route B is instructed. Roux) ? Route A or route B is selected according to the selection instructions from the tilJ control circuit 2 return circuit 24 and others. The route control circuit 24 also outputs route establishment status information. The error detection &tPL ij control circuit 25 outputs operating state information such as HA 5 TOP and % i PL. Signal SEL is logic rlJ
That is.

AND circuits 30 to 33 supply the above-mentioned route establishment state information and operation state information to the register 22.・Signal SE
The strobe of CNTL3 is set to 1 when L is logic “1”.
When the pulse is generated, route establishment state information and operating state information are set in the register 22. Signal 5EL
When I becomes logic "1", AND circuits 34 to 37 are opened, and the resulting AND circuit 38 is also opened. Parity creation circuit 2
3 creates a parity bit based on the signals on DBUSOO through 03 and the contents of register 22. The contents of register 21 and the parity bit created by parity creation circuit 230 are stored on signal lines %DBUS10 to 17 and 1) BUSI when signal 5ELI is logic "1".
It is placed on P.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is possible to comprehensively manage the configuration of network-related devices, and it is possible to automatically switch to the optimal backup configuration when a failure occurs. It is possible to achieve remarkable effects. Note that it is also possible to provide an interface between the NMP interface standard circuit of each network-related device and the power supply control unit, and switch the route to disconnect the faulty device and turn off the power to the faulty device at the same time.

[Brief explanation of the drawing]

Figures 1 and 2 are diagrams explaining the conventional active/standby switching system for network-related devices, Figure 3 is a diagram showing the position of the network management device within one communication control processing device, and Figure 4 is a diagram showing the active/standby configuration that performs switching control by the network management device, Figure 5 is a diagram explaining the bit definitions of the address designation word and the control word, and Figure 6 is the NM
Time chart at P link, Figure 7 is I”, I M
1 is a block diagram of one embodiment of an F-interface standard circuit; FIG. 1-1 and 1-2... central processing unit, 2-1 and 2-2...
...Communication control processing device, 3-1 and 3-2...Line connection device, 4...Line switch (line switching device), 4
1... System monitoring device, 5... Channel adapter, 6... Central 1i! Control device η', 7... Line scanning mechanism, 8... Memory, 9... Network management device, 10... Floppy disk tearing, 11... Display, 12... Keyboard, 13 ...N~I
P interface standard circuit, 14... Link address setting circuit, 15... Link address comparison circuit, 1
6... Device code setting circuit, 18 and 19... Flip-flop, 20... Parity check circuit, 2
1 and 22... register, 23... parity creation circuit,
24... Route control circuit, 25... Error detection &
i P Ll control circuit, 26 to 38...AND circuit, 39 and 40...NOR circuit, 41 and 42...
NANDAND circuit or 48...OR circuit, lJV
...Driver, I'IJ■...Receiver. Patent Applicant: Fujitsu Limited Representative Patent Attorney Yotsube Kyotani

Claims (1)

[Claims] In an online system consisting of multiple central processing units, multiple communication control processing units, and multiple line connection devices and line switching devices in active and backup configurations, an initial microprogram loading function for the communication control processing unit. , error σ) A network management device that has a logging function, various operating functions, and various maintenance functions, and an interface control circuit installed in each of the above-mentioned multiple communication control processing devices, multiple line connection devices, and line switching devices. and a link connecting each of the above interface control circuits and one network management device, and the one network management device k
Also, the interface control circuit is configured to be able to send an addressing word specifying a device and control system data onto the link, and each of the interface control circuits determines whether the addressing word on the link specifies the device to which it belongs. and route switching means that performs route switching on the condition that the device to which it belongs is specified when control system data on the link instructs route switching. , a display system data sending means for sending display system data consisting of route establishment state information and operation state information onto the link on the condition that its own device is designated.